<template>
    <div>
         <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
         <el-alert
         show-icon
    title="注意：只允许为第三级分类设置相关参数！"
    type="warning" :closable="false">
  </el-alert>
  <el-row class="cat_opt">
      <el-col>
          <span>选择商品分类：</span>
           <el-cascader
    v-model="selectedCateKey"
    :options="catelist"
    :props="cateProps"
    @change="handleChange"></el-cascader>
      </el-col>
  </el-row>

    <el-tabs v-model="activeName" @tab-click="handleTabClick">
    <el-tab-pane label="动态参数" name="many">
        <el-button size="mini" type="primary" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加参数</el-button>
        <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-tag closable v-for="(item,i) in scope.row.attr_vals" :key="i" @close="hanldClose(i,scope.row)">{{item}}</el-tag>

                    <el-input
  class="input-new-tag"
  v-if="scope.row.inputVisible"
  v-model="scope.row.inputValue"
  ref="saveTagInput"
  size="small"
  @keyup.enter.native="handleInputConfirm(scope.row)"
  @blur="handleInputConfirm(scope.row)"
>
</el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>

                </template>
            </el-table-column>
            <el-table-column label="#" type="index"></el-table-column>
             <el-table-column label="参数名称" prop="attr_name"></el-table-column>
             <el-table-column label="操作" >
                 <template slot-scope="scope">
                     <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                     <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeParams(scope.row.attr_id)">删除</el-button>
                 </template>
             </el-table-column>
        </el-table>
    </el-tab-pane>
    <el-tab-pane label="静态属性" name="only">
         <el-button :disabled="isBtnDisabled" size="mini" type="primary" @click="addDialogVisible = true">添加属性</el-button>
           <el-table :data="onlyTableDate" border stripe>
                   <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-tag closable v-for="(item,i) in scope.row.attr_vals" :key="i" @close="hanldClose(i,scope.row)">{{item}}</el-tag>

                    <el-input
  class="input-new-tag"
  v-if="scope.row.inputVisible"
  v-model="scope.row.inputValue"
  ref="saveTagInput"
  size="small"
  @keyup.enter.native="handleInputConfirm(scope.row)"
  @blur="handleInputConfirm(scope.row)"
>
</el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>

                </template>
            </el-table-column>
            <el-table-column label="#" type="index"></el-table-column>
             <el-table-column label="属性名称" prop="attr_name"></el-table-column>
             <el-table-column label="操作" >
                 <template slot-scope="scope">
                     <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">>编辑</el-button>
                     <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeParams(scope.row.attr_id)">删除</el-button>
                 </template>
             </el-table-column>
        </el-table>
    </el-tab-pane>
  </el-tabs>
    </el-card>

    <el-dialog
  :title="'添加'+titleText"
  :visible.sync="addDialogVisible"
  width="50%"
  @close="addDialogClosed"
  >
  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="addForm.attr_name"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams">确 定</el-button>
  </span>
</el-dialog>

<el-dialog
  :title="'修改'+titleText"
  :visible.sync="editDialogVisible"
  width="50%"
  @close="editDialogClosed"
  >
  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px" >
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="editForm.attr_name"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editParams">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>


export default {
    data:function(){
        return {
            catelist:[],
            selectedCateKey:[],
            cateProps:{
                expandTrigger:'hover',
                value:'cat_id',
                label:'cat_name',
                children:'children'
            },
            activeName:'many',
            manyTableData:[],
            onlyTableDate:[],
            addDialogVisible:false,
            editDialogVisible:false,
            inputVisible:false,
            inputValue:'',
            addForm:{
                attr_name:''
            },
            addFormRules:{
                attr_name:[
                    {required:true,message:'请输入参数名',trigger:'blur'}
                    ]
            },
            editFormRules:{
                attr_name:[
                    {required:true,message:'请输入参数名',trigger:'blur'}
                    ]
            },
            editForm:{
                
            }
        }
    },
    created:function(){
        this.getCateList()
    },
    methods:{
        handleInputConfirm:async function(row){
            
            if(row.inputValue.trim().length===0){
                row.inputValue=''
                row.inputVisible=false
                return
            }

            row.attr_vals.push(row.inputValue.trim())
            row.inputValue=''
            row.inputVisible=false

            this.saveAttrVals(row,'修改')


        },
        saveAttrVals:async function(row,str){

            const{data:res}=await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
                attr_name:row.attr_name,
                attr_vals:row.attr_vals.join(' '),
                attr_sel:row.attr_sel
            })

            if (res.meta.status!==200) {
                return this.$message.error(str+'参数项失败！')
            }
            this.$message.success(str+'参数项成功')
        },
        hanldClose:function(i,row){
            row.attr_vals.splice(i,1)
              this.saveAttrVals(row,'删除')

        },
        showInput:function(row){
             row.inputVisible=true
             this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus();
        });
         
        },


        getCateList:async function(){
           const{data:res}=await this.$http.get('categories')
           if (res.meta.status!==200) {
              return this.$message.error('获取商品分类失败')
           }
           this.catelist=res.data
                     
        },
        editParams:function(){
           this.$refs.editFormRef.validate(async valid=>{
               if(!valid)return
              const{data:res}=await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{attr_name:this.editForm.attr_name,attr_sel:this.activeName})
              if (res.meta.status!==200) {
                  return this.$message.error("修改失败")
              }
              this.$message.success('修改成功')
              this.getParamsData()
              this.editDialogVisible=false

           })
        },
        editDialogClosed:function(){
            this.$refs.editFormRef.resetFields()
        },
        showEditDialog:async function(id){
             const{data:res}= await this.$http.get(`categories/${this.cateId}/attributes/${id}`,{params:{attr_sel:this.activeName}})

            if (res.meta.status!==200) {
                return this.$message.error("获取数据失败")
            }
            this.editForm=res.data


            this.editDialogVisible=true
        },
        addParams:function(){
            this.$refs.addFormRef.validate(async valid=>{
                if (!valid) return
               const{data:res}=await this.$http.post(`categories/${this.cateId}/attributes`,{
                    attr_name:this.addForm.attr_name,
                    attr_sel:this.activeName
                })
                if (res.meta.status!==201) {
                    return this.$message.error('添加失败')                  
                }
              this.$message.success('添加成功')
                this.addDialogVisible=false
                this.getParamsData()
                    
                
            })
        },
        addDialogClosed:function(){
            this.$refs.addFormRef.resetFields()
        },
        handleChange:function(){
        
            this.getParamsData()
        },
        removeParams:async function(attr_id){
           const confirm=await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(error=>error)
        if (confirm!='confirm') {
            return this.$message.info('已取消删除')
        }

        const{data:res}=await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)

        if(res.meta.status!=200){
            return this.$message.error('删除参数失败')
        }
        this.$message.success('删除成功')
        this.getParamsData()

        },
        getParamsData:async function(){
                if (this.selectedCateKey.length!=3) {
                this.selectedCateKey=[]
                this.manyTableData=[]
                this.onlyTableDate=[]
                return
            }
            const{data:res}=await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:this.activeName}})
            
           if (res.meta.status!==200) {
               this.$message.error("获取参数数据失败")
           }

           res.data.forEach(item => {
               item.attr_vals=item.attr_vals? item.attr_vals.split(' '):[]
               item.inputVisible=false
               item.inputValue=''
           });
           console.log(res.data);
           
           if (this.activeName==="many") {
               this.manyTableData=res.data
           }else{
               this.onlyTableDate=res.data
           }
           
        },
        handleTabClick:function(){
            this.getParamsData()          
        }

    },
    computed:{
        isBtnDisabled:function(){
        if (this.selectedCateKey.length!==3) {
            return true
        }
        return false
        },
        cateId:function(){
            if (this.selectedCateKey.length===3) {
                return this.selectedCateKey[2]
            }
            return null
        },
        titleText:function(){
            if (this.activeName==="many") {
                return '动态参数'
            }
            return '静态属性'
        }
    }
}
</script>
<style lang="less" scoped>
.cat_opt{
    margin: 15px 0;
}
.el-tag{
    margin: 5px;
}
.input-new-tag{
    width: 120px;
}
</style>